Prismo Metals Appoints Porphyry Expert Prof. Jamie Wilkinson for Propylitic Mineral Chemistry Targeting at Silver King Project

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(via TheNewswire) Vancouver, British Columbia, June 9th, 2026 – TheNewswire – Prismo Metals Inc. (the “Company”) (CSE: PRIZ) (OTCQB: PMOMF) is pleased to announce the appointment of Jamie J. Wilkinson, Professor of Geology at Imperial College London and Senior Mineral Exploration Consultant, to assist with the application of advanced propylitic alteration mineral chemistry techniques at its Silver King project in the Pioneer Mining District near Superior, Arizona. Prof. Wilkinson will work directly with Prismo’s technical team, led by Chief Exploration Officer Dr. Craig Gibson, and Special Advisor Dr. Linus Keating, to deliver a focused, high-impact evaluation of the extensive propylitic “green rock” alteration halo that surrounds known mineralization and geophysical anomalies at Silver King. This halo — dominated by chlorite, epidote and pyrite — forms a large geochemical footprint that can extend several kilometers from a porphyry center and is particularly well developed in the same Laramide-aged volcaniclastic breccias, sandstones and Proterozoic dolerite sills that host the giant Resolution porphyry Cu-Mo deposit only 3.4 km away. The program will proceed in four integrated stages: Strategic site selection: Prof. Wilkinson will collaborate with Drs. Gibson and Keating to identify and prioritize approximately 20 optimal sample locations across the propylitic alteration zone. Sites will be chosen based on existing mapping, pyrite halo distribution, hydrothermal breccias, geophysical targets and distance to known mineralization to maximize vectoring potential. High-precision sampling and analysis: Representative samples will be collected and analyzed using state-of-the-art, in-situ techniques — electron microprobe for major and minor elements plus laser ablation ICP-MS (LA-ICP-MS) for a full suite of trace elements — using laboratories and staff experienced in the approach at the Natural History Museum in London. Both chlorite and epidote will be systematically analyzed grain-by-grain. Quantitative vectoring and 3D modeling: Prof. Wilkinson will apply the chlorite proximitor methodology (which he co-developed) together with complementary epidote chemistry and chlorite geothermometry. Key element ratios (such as Ti/Li, Ti/Sr and V/Co) and temperature-sensitive indicators vary systematically with distance from the porphyry center. These ratios can change ...

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